Removal of Ca from Paper Sludge Ash by Acid Leaching and Synthesis of High Cation Exchange Capacity Zeolite Material

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概要

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• Paper sludge ash was converted into a zeolitic product with high cation exchange capacity (CEC) through acid leaching. The raw ash was treated with 1 M HCl, 1M HNO3 and 1 M CH3COOH solutions. Ca and Mg were more easily extracted from the ash than Si and Al, and the Ca extractions using HCl and HNO3 were higher than that from CH3COOH. Element extractions and leachant pH in the HCl and HNO3 solutions were similar and steady state was achieved after 2hours of leaching. A zeolitic product was synthesized from the 2-hour 1M HCl ash leach by reaction of the residue with2.5 M NaOH solution (80℃, hours). Zeolite-A was synthesized from leached ash, and the CEC of the zeolite produced from leached ash (l30cmol/kg) was higher that that from raw ash (40cmol/kg), and similar to that obtained when leaching ash for 24hours.

著者

• Wajima Takaaki

  Faculty Of Engineering And Resource Science Akita University

• Munakata Kenzo

  Faculty Of Engineering And Resource Sience Akita University

• Wajima Takaaki

  Faculty Of Engineering And Resource Sience Akita University

• Munakata Kenzo

  Faculty Of Engineering And Resource Sciences Akita University

• Munakata Kenzo

  Faculty of Engineering and Resource Science, Akita University

関連論文

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• INHIBITION OF THE RELEASE OF ALKALI METALS FROM COAL DURING HEAT TREATMENT WITH THE ADDITION OF CLAY MINERAL
• Removal of Ca from Paper Sludge Ash by Acid Leaching and Synthesis of High Cation Exchange Capacity Zeolite Material
• Synthesis of Hydrocalumite-like Adsorbent from Blast Furnace Slag using Alkali Fusion
• Adsorption Characteristics of Water Vapor on Zeolitic Materials for Honeycomb-Type Adsorbent

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